Geotech

Cards (22)

  • Soil Mechanics - deals with properties, behavior, and performance of soil.
  • Soil - Un-cemented aggregate of mineral grains and decayed organic matter
  • Behavior of soil under the action of: 1. Loads 2. Gravitational Forces 3. water 4. Temperature
  • Karl Terzaghi - a famous scientist defines soil mechanics
  • Geotechnical Engineering - sub discipline of civil engineering that involves natural materials found close to the surface of the earth
  • Weathering - process of breaking down rocks by physical and chemical process into smaller particles
  • Biological Weathering - caused by activities of living organism
  • Glacial Soil - Formed by transportation and deposition of glaciers
  • Alluvial Soil - Transported by running water and deposited along streams
  • Lacustrine Soil - Formed by deposition in quiet lakes
  • Marine Soil - Formed by deposition in the seas
  • Aeolian Soil - Transported and Deposited by wind
  • Colluvial Soil - Formed by movement of soil from its original place by gravity, such as during landslide
  • AASHTO - American Association of State Highway and Transportation Officials
  • ASTM - American Society for Testing and Materials
  • Rock Cycle
    • All rock at or near Earth's surface is being modified by the processes of metamorphism, melting, crystallization, lithification and weathering.
  • Various reasons to study the properties of soil:
    • Foundation to support Structures and Embankments
    • Construction Material
    • Slopes and Landslides
    • Earth Retaining Structures
    • Special Problems
  • Effects of static loading on soil mass
    • Shear failure of the foundation soil
    • Settlement of structures
  • Stability criteria (Solution)
    • There should be no shear failure of the foundation soil.
    • The settlement should remain within permissible limits.
  • Firm Soil
    • Spread Footing
  • Soft Soil
    • Pile Foundation
  • Effects of dynamic loading on soil mass
    • Compaction Characteristics
    • Moisture Variation